SQLite3Result 类

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

简介

处理 SQLite 3 扩展返回结果集的类。

类摘要

SQLite3Result {
/* 方法 */
public columnName ( int $column ) : string|false
public columnType ( int $column ) : int|false
public fetchArray ( int $mode = SQLITE3_BOTH ) : array|false
public finalize ( ) : bool
public numColumns ( ) : int
public reset ( ) : bool
}

Table of Contents

User Contributed Notes

atesin () 6m4i1 ! com 02-Mar-2021 02:56
in response to jan at bootfinder dot co dot uk (comment #115891) about getting num_rows...

how about (not tested)... ?

<?php // do cleans before and after if needed

for ( $nrows = 0; isarray($result->fetchArray()); ++$nrows );
return $nrows;

?>
jan at bootfinder dot co dot uk 10-Oct-2014 03:43
I use the following code to get num_rows:

<?php
...
$nrows = 0;
$result->reset();
while ($result->fetchArray())
    $nrows++;
$result->reset();
return $nrows;
...
?>
sameers dot public at gmail dot com 23-May-2014 05:30
According to http://www.php.net/manual/en/sqlite3result.columntype.php, and also per my experience, columnType() doesn't return anything other than SQLITE3_NULL. Consequently, the test suggested in the comment that tries to identify whether a column is NULL is incorrect.

The right thing to do appears to be to test if ($result->fetchArray())[0] == null.
alan71-at-free-fr 28-Dec-2010 06:34
Here's a snippet that might help you to write a fetchObject function that is also missing:

<?php

function fetchObject($sqlite3result, $objectType = NULL) {
    $array = $sqlite3result->fetchArray();

    if(is_null($objectType)) {
        $object = new stdClass();
    } else {
        // does not call this class' constructor
        $object = unserialize(sprintf('O:%d:"%s":0:{}', strlen($objectType), $objectType));
    }
   
    $reflector = new ReflectionObject($object);
    for($i = 0; $i < $sqlite3result->numColumns(); $i++) {
        $name = $sqlite3result->columnName($i);
        $value = $array[$name];
       
        try {
            $attribute = $reflector->getProperty($name);
           
            $attribute->setAccessible(TRUE);
            $attribute->setValue($object, $value);
        } catch (ReflectionException $e) {
            $object->$name = $value;
        }
    }
   
    return $object;
}

?>

Heavily inspired of Bergmann's Object Freezer :
https://github.com/sebastianbergmann/php-object-freezer/blob/master/Object/Freezer.php
claudiu at virtuamagic dot com 08-Mar-2010 02:34
fetchArray() will return bool(false) in case of 0 rows.
jonscully at gmail dot com 30-Nov-2009 01:35
Since SQLite3Result::numRows is unavailable, use:

<?php
if ($res->numColumns() && $res->columnType(0) != SQLITE3_NULL) {
    // have rows
} else {
    // zero rows
}
?>

Because when there are zero rows:
* SQLite3Result::fetchArray will return '1'
* SQLite3Result::numColumns will return '1'
* Column type for column '0' will be SQLITE3_NULL
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